package com.yc.yyds.servlet;

import com.google.gson.Gson;
import com.yc.yyds.Bean.Result;

import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;
import java.io.IOException;
import java.util.UUID;

@WebServlet(name = "UploadImageServlet", value = "/UploadImageServlet.s")
@MultipartConfig
public class UploadImageServlet extends HttpServlet {
    public static final String IMAGE_PATH="D:\\images\\";
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {


    }


    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        Result result;
        try{
            Part image = request.getPart("image");
            //提取文件后缀名
            String suffix = image.getSubmittedFileName().replaceAll(".+(\\.\\w+)", "$1");
            //生成随机文件名
            String filename = UUID.randomUUID().toString();
            filename = filename.replaceAll("-", "");
            filename+=suffix;
            image.write(IMAGE_PATH+filename);
            //构建上传文件的web路径
            String webpath="upload/"+filename;
            result=new Result(1,"文件上传成功",webpath);
        }catch (Exception e){
            e.printStackTrace();
            result=new Result(0,"文件上传失败","null");
        }
        String s = new Gson().toJson(result);
        response.getWriter().append(s);
    }
}
